Home / 20,752.25-30,966.51-18,515.70

Finding the Fourth Proportional to 20,752.25, 30,966.51 and 18,515.70

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Solution

The fourth proportional to 20,752.25, 30,966.51 and 18,515.70 is: 27,629.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.25 : 30,966.51 = 18,515.70 : x
  2. Step 2: Convert to fraction form
    20,752.25/30,966.51 = 18,515.70/x
  3. Step 3: Cross multiply
    20,752.25x = 30,966.51 × 18,515.70
  4. Step 4: Simplify right side
    20,752.25x = 573,366,794.77
  5. Step 5: Solve for x
    x = 573,366,794.77/20,752.25
  6. Step 6: Final answer
    x = 27,629.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.